like, it would feel kinda silly not to provide this function. Just in
case. You never know. Better safe than sorry. Once burnt, twice shy.
Don't judge a book by its cover. Never not have sex on a first date.
+(I have been told that at least one person, and I quote, ``found this
+function indispensable'', however.)
@item Head, Body, All
These three match keys use the same match types as the @code{From} (etc)